Octal literals are not allowed because disallowing them discourages programmers from using leading zeros as padding in a script. For example, look at the following snippet: var eight = 0008, nine = 00009, ten = 000010, eleven = 011; console.log(eight, nine, ten, eleven); Seems harmless enough, right? We programmers with OCD just want to align … Read more
Octal is used when the number of bits in one word is a multiple of 3, or if the grouping of the bits makes sense to notate in groups of 3. Examples are ancient systems with 18bit word sizes (mostly historical) systems with 9bit bytes (mostly historical) unix file permissions with 9bits (3*3bits, “rwxr-x—” 0750) … Read more
Try 0o10, may be because of python 3, or pyshell itself. PEP says, octal literals must now be specified with a leading “0o” or “0O” instead of “0”; http://www.python.org/dev/peps/pep-3127/
It makes little difference, but formally the integer constant 0 is octal in C. From the C99 and C11 standards, 6.4.4.1 Integer constants integer-constant: decimal-constant integer-suffixopt octal-constant integer-suffixopt hexadecimal-constant integer-suffixopt decimal-constant: nonzero-digit decimal-constant digit octal-constant: 0 octal-constant octal-digit hexadecimal-constant: … …
You have assigned a character literal, which is delimited by single quotes, eg ‘a’ (as distinct from a String literal, which is delimited by double quotes, eg “a”) to an int variable. Java does an automatic widening cast from the 16-bit unsigned char to the 32-bit signed int. However, when a character literal is a … Read more
This is a common Javascript gotcha with a simple solution: Just specify the base, or ‘radix’, like so: parseInt(’08’,10); // 8 You could also use Number: Number(’08’); // 8
Yes, 0 is an Octal literal in C++. As per the C++ Standard: 2.14.2 Integer literals [lex.icon] integer-literal: decimal-literal integer-suffixopt octal-literal integer-suffixopt hexadecimal-literal integer-suffixopt decimal-literal: nonzero-digit decimal-literal digit octal-literal: 0 <——————–<Here> octal-literal octal-digit